Open the System Preferences (either from the Dock or from the Apple
menu).
Open the Displays Panel and choose the Display tab.
On the left of the Displays tab you can select one of the Resolutions
from the list. Higher resolutions allow you to see more “stuff”.
IT is recommending at least 1024x768 unless you have a specific
reason
to use a lower resolution.
Quit or close the System Preferences when done.
Notes:
At higher resolutions, you may not be able to see as many colors
(Thousands instead of Millions).
Flat panel monitors have a prefered resolution. If you set the display
lower or higher, the display will be noticably more blurry. The prefered
resolution should be noted in your display manual. For example, the
new 17 inch Apple Studio Display (flat panel) is most crisp at 1280x1024.